Mary Ann Mayo Books

Vectors in Virus Biology
Vectors in Virus Biology

By Mary Ann Mayo

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A Christian Guide to Sexual Counseling: Recovering the Mystery and the Reality of One Flesh
A parent's guide to sex education
In the Beginning: Teaching Your Children About Sex Ages 4 to 7
In the Beginning: Teaching Your Children About Sex Ages 4 to 7

By Mary Ann Mayo

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Simple text, Bible verses, and illustrations introduce the principles of sexuality.

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The Complete Woman
The menopause manager
The menopause manager

By Mary Ann Mayo

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Twilight Travels With Mother
The Menopause Manager
Twilight Travels With Mother
The sexual woman
The sexual woman

By Mary Ann Mayo

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.

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